Sierra 118-5881-1 Switch Box for Mercury Outboard Engines

The Sierra 118-5881-1 (also known as 18-5881) is a high-quality aftermarket switch box designed specifically for 4-cylinder in-line outboard engines equipped with ADI ignition systems. This ignition component serves as the critical power pack that controls the timing and firing of the spark plugs, ensuring reliable engine performance in demanding marine environments.

Key Features:

• Engineered for 4-cylinder in-line outboards with ADI ignition systems
• Direct replacement for Mercury Marine, Chrysler/Force, and US Marine applications
• Manufactured to meet or exceed OEM specifications
• Built to withstand harsh marine conditions
• Premium quality construction for long-lasting reliability

OEM Cross-References:

• Mercury Marine: 332-5772A1, 332-5772A2, 332-5772A3, 332-5772A5, 332-5772A7, F720301
• Chrysler/Force/US Marine: 332-5772A5, 332-5772A7
• CDI Electronics: 114-5772
• Mallory: 9-25104

Sierra products are trusted by marine technicians and boat owners worldwide for their exceptional quality and performance. Each switch box is precision-engineered to deliver optimal ignition timing and consistent spark delivery, helping your outboard engine run smoothly and efficiently.